[erlang-questions] Cowboy serve static files [video file] can not fast forward

[by]

Hi,

I am trying to serve a static website via Cowboy, and I followed the guide, it seems works fine.

The problem is that the static website has a mp4 file, and I play the video on web page.
It can play, but when I try to click the progress bar to do fast forward, it keeps play on the normal way(not work).

Do I need add some other configurations for this?

Same static files works fine with nginx.

Thanks,
Yao Bao